Eroare de compilare: user.cpp:9:19: error: ‘int index’ redeclared as different kind of symbol int n, lenght, k, index; ^ In file included from /usr/include/c++/4.8/cstring:42:0, from user.cpp:2: /usr/include/string.h:482:1: error: previous declaration of ‘const char* index(const char*, int)’ index (__const char *__s, int __c) __THROW ^ user.cpp: In function ‘bool function_OR()’: user.cpp:20:18: error: invalid types ‘char [1010][<unresolved overloaded function type>]’ for array subscript while(v[index] == 'O' && v[index + 1] == 'R') ^ user.cpp:20:40: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator+’ while(v[index] == 'O' && v[index + 1] == 'R') ^ user.cpp:22:15: error: overloaded function with no contextual type information index += 2; ^ user.cpp: In function ‘bool function_AND()’: user.cpp:32:18: error: invalid types ‘char [1010][<unresolved overloaded function type>]’ for array subscript while(v[index] == 'A' && v[index + 1] == 'N' && v[index + 2] == 'D') ^ user.cpp:32:40: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator+’ while(v[index] == 'A' && v[index + 1] == 'N' && v[index + 2] == 'D') ^ user.cpp:32:63: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator+’ while(v[index] == 'A' && v[index + 1] == 'N' && v[index + 2] == 'D') ^ user.cpp:34:15: error: overloaded function with no contextual type information index += 3; ^ user.cpp: In function ‘bool function_NOT()’: user.cpp:44:15: error: invalid types ‘char [1010][<unresolved overloaded function type>]’ for array subscript if(v[index] == 'N' && v[index + 1] == 'O' && v[index + 2] == 'T') ^ user.cpp:44:37: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator+’ if(v[index] == 'N' && v[index + 1] == 'O' && v[index + 2] == 'T') ^ user.cpp:44:60: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator+’ if(v[index] == 'N' && v[index + 1] == 'O' && v[index + 2] == 'T') ^ user.cpp:46:15: error: overloaded function with no contextual type information index += 2; ^ user.cpp:51:19: error: invalid types ‘char [1010][<unresolved overloaded function type>]’ for array subscript if(v[index] == '(') ^ user.cpp:53:19: error: no post-increment operator for type index ++; ^